<template>
  <!-- 动态组件B -->
    <div>
        <h3>{{title}}</h3>
    </div>
</template>

<script>
export default {
    name: 'activeB',
    components:{},
    data() {
        return {
          title:""
        };
    },
    props:{

    },
    mounted() {
      this.title = Math.random()
    },

    methods: {

    },
};
</script>

<style scoped>

</style>
